IEEE Transactions on Automatic Control, Vol.60, No.11, 3059-3064, 2015
A High-Gain Nonlinear Observer With Limited Gain Power
In this note we deal with a new observer for nonlinear systems of dimension n in canonical observability form. We follow the standard high-gain paradigm, but instead of having an observer of dimension n with a gain that grows up to power n, we design an observer of dimension 2n - 2 with a gain that grows up only to power 2.